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Leaching behavior of iron from simulated landfills with different operational modes |
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| Authors: | Li Wen-Bing Yao Jun Xia Fang-Fang Feng Hua-Jun Feng Huan Jiang Chen-Jing Fang Cheng-Ran Shen Dong-Sheng |
| Institution: | a Department of Environmental Engineering, Zhejiang University, Hangzhou 310029, China b Department of Environmental Engineering, Taizhou College, Linhai 317000, China c College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China d The Second Institute of Oceanography, Hangzhou 310012, China e School of Civil Engineering and Architecture, Zhejiang University of Science & Technology, Hangzhou 310023, China |
| Abstract: | The aim of the present study was to investigate the leaching behavior of iron from simulated landfills with different operation modes, with an emphasis on the variation of iron in different oxidation state, ferrous Fe(II) and ferric Fe(III) percentage and the distribution of iron content in different landfill leachate fractions. The leaching behavior and accumulated amounts of iron leached out by leachate from conventional landfill (CL) and leachate recirculated landfill (RL) exhibited decidedly different trends except for the initial 28 days. In addition, the percentage of iron leached from CL and RL accounted 1.00% and 0.14% for the total amount in landfills, respectively. No correlations between iron and selected characteristics in leachate were found were observed in the two simulated landfills. Significant positive correlations between particulate bound iron and Fe(III) were found in the leachates from RL (R2 = 0.748) and CL (R2 = 0.833). |
| Keywords: | Leachate Heavy metal Iron Municipal solid waste Landfill |
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